Dragon Horn

Appearance

Primary thallus: Squamulose, persistent

Squamules: 2-6 mm long, 1-3 mm wide, deeply incised, narrow-lobed to coralloid

Upper surface: Light grayish-green; lower surface: white, esorediate, involute or flattened

Podetia: 20-70 mm tall, greenish gray to dark brown, unbranched to much-branched

Apices and axils: perforated surface: esorediate;

Cortex: At base rarely continuous, breaking up above base and giving rise to abundant podetial squamules

Apothecia: Uncommon, pruinose, later brown, in groups around margins of openings, 2-3 mm diameter

Distribution

Worldwide

Habitat

Grows on mossy rocks, rotting wood, or tree bases.